Disappointed with KDE 4's performance and other shortcomings, Timothy Pearson continued KDE 3.5 development under the name Trinity. Today the first third major update of the Trinity Desktop Environment is released, providing an alternative upgrade path for KDE users who do not feel comfortable with KDE 4.

It did got better after moving its settings to XRender instead of OpenGL.

This does happen on some machines. It shouldn't be so. This is a dead giveaway that the graphics stack implementation of OpenGL is not performing anywhere near as well as it should on that particular machine.

Xrender should not be able to beat OpenGL (at anything, let alone at hosting Kwin).